Fuselage structure



Sept. 22, 1925.

T. B. MCGRATH FUSELAGE STRUCTURE Filed Aug. 4, 1922 State of Ohio, have invented certain new/ Patented Sept. 22, 1925.

PATENT OFFICE.

frnoius B. manna, or DAYTON, omo.

rosmalen STRUCTURE.

Application illed August v4, 1922. Serial' No.. 579,648.

To all whom t may concern.'

B e it known that I, THOMAS B. MGGRATH, Va citizen of the United States, residing'at Dayton, in the county of Montgomery and and useful Improvements in Fuselage Structures, of which the following is a specification.

rIhis invention relates to a fuselage structure in which the component arts maybe readilylassembled andy adjusted.

The invention is hereinafter described in connection with the accompanying draw-V in s, in Which-` ig. 1 is a side elevation of a portion of a fuselage structure embodying the invention;

Figure 2 is a plan view of fuselage structure; and

Figure?) is a sectional View on the line 33 of' Fig. 1.

Figure 4 is a detailed view partlyin section of tl e component parts of my adjustable tubu ar member.

The numerals and 11 designate the up.-

la part of the f Aper and lower longrons having-spaced fittings 12and 13 secured thereto. These fittings are preferably aluminum or bronze castings having six socketsformed therein.` A set of three of these sockets 14 on the upper fitting and three sockets 15 on the lower fitting have their axes arranged in the verticalpla-neof the axes of the upper and lower longrons.. The. outer sockets of each fitting 14, 15 are 'arranged at an an le while the central sockets are Ivertically disposed. The fittings 1,2 and 13 are alsoprovidedwith sets of `three sockets '16 and 17 y arranged hori- 'z'oiitally to receive tubular members extending between the upper and the lower longrons. f

The fittings 12and. 13 are arranged in staggered relation and the angularly disposed sockets thereof are connected by diagonal tubular members 18, 19. Each of these members is provided at either end with an interiorly fitted tubular block held in place b bolts or rivets21 and having an interna ly screw-threaded portion 22 adapted to receive yone end of a right and left hand threaded connection 30,having a nutl face 31 and held in adjustment by -a jamb nut 32. Vertical tubular members 23 connect the central socket 14 or 15 with an auxiliary fitting 24 or 25. The latter are each provided with vertical and horizontal sockets 26, 27 and 26, 27, respectively. I ADiagonal members 28 similar in construction to Amembers 18, connect the outer sockets 16 with a like fitting on the opposite upper 'longron and the fittings 13 of the lower longrons are connected in like manner. The central socket 16 is connected to an opposite socket 16 by a tubular member: 29 and opposite connections 27 and 27'are connected in like manner. All of the tubular members are provided at either end with int-eriorlyfitted blocks similar to the blocks 20. In assemblingV the truss formation to the longrons the various fittings are first secured in proper position. The screw threaded portions 20 of reach component part of the tubular members is then screwed into the appropriate socket the coupling sleeve 31 being approximately in position. The sleeve 31 is then tightened to adjust the length of the tubular member the desired amount. In order to maintain proper adjustment at the connections the final adjustments may be distributedl between the end threads 22 and the couplingsleeve 31. `After the final adjustments have been made, the parts are locked in adjusted position by lock wires 32. l

I claim: y 1. A 4fuselage structure comprising,

longer-ons, fittings attached to the upper and lower longronsin staggered relation, and

rigid `tubular members connecting said fittings, said tubular members consisting of componentparts adjustably connected' together. f

. 2. A fuselage structure comprising,

3. In a fuselage structure, longrons, fittiugs mounted on said longrons and provided with tubular sockets, tubular members adapted to adjustably connect said fittings, said tubular members each comprising a cylindrical tube, interiorly screwthreaded tubular block fixedly mounted in ends of .said tube and' exteriorly screw sockets and other sockets disposed at an threaded block adapted to t Within said angle to the vertically and horizontally disyinteriorly screw threaded block, said 'last posed'sockets adapted to receive truss-mem- 10 named member being provided with suitbers; able lock nuts. In testimony whereof I affix my signature.

4. In a fuselage structure, a fitting having vertically and horizontally' disposed THOMASy B. lVICGrRAIl-I.` 

